Running this code preceded by sudo causes my computer to freeze (even before asking for the superuser password)

A guide here: http://en.gentoo-wiki.com/wiki/Ralink_RT2870 suggests (under the "Usage" heading) that I should run

Code:

modprobe rt2870sta

, which gives no output. However, trying to then run

Code:

ln -s /etc/init.d/net.lo /etc/init.d/net.ra0

gives the error

Code:

ln: creating symbolic link `/etc/init.do/net.ra0': File exists

. Further, runing

Code:

/etc/init.d/net.ra0 restart

gives

Code:

bash: /etc/init.d/net.ra0: No such file or directory

.

I am at a loss for what to do. Any advice would be appreciated.

EDIT: I did my best to follow the instructions here: http://www.cyberciti.biz/tips/linux-install-rt2870-chipset-based-usb-wireless-adapter.htm l, but failed at step #5 - ra0 did not show up under ifconfig output, only eth0 and lo.